Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Rapid voltammetric monitoring of trace Αs(III) using disposable injection-moulded sensors in a portable configuration
AU - Karapa, A.
AU - Kokkinos, C.
AU - Fielden, P.R.
AU - Baldock, S.J.
AU - Goddard, N.J.
AU - Economou, A.
PY - 2023/1/15
Y1 - 2023/1/15
N2 - This work reports the fabrication of portable system for the determination of trace As(III) in water samples by mean of anodic stripping voltammetry (ASV). The portable detection system consists of a three-electrode mini cell featuring injection-moulded plastic conductive electrodes. As(III) accumulates on the disposable working electrode by electrolysis forming in situ an alloy with co-deposited gold. Then, the accumulated arsenic is detected by applying an anodic potential scan on the working electrode. The chemical and instrumental conditions were studied and the analytical parameters for the determination of As(III) were established. The limit of detection was 0.2 μg L-1 and the repeatability at the 5.0 μg L-1 As(III) level (n = 10) was 4.7 %. The portable set-up was applied to different groundwater samples with recoveries between 95 and 105 %.
AB - This work reports the fabrication of portable system for the determination of trace As(III) in water samples by mean of anodic stripping voltammetry (ASV). The portable detection system consists of a three-electrode mini cell featuring injection-moulded plastic conductive electrodes. As(III) accumulates on the disposable working electrode by electrolysis forming in situ an alloy with co-deposited gold. Then, the accumulated arsenic is detected by applying an anodic potential scan on the working electrode. The chemical and instrumental conditions were studied and the analytical parameters for the determination of As(III) were established. The limit of detection was 0.2 μg L-1 and the repeatability at the 5.0 μg L-1 As(III) level (n = 10) was 4.7 %. The portable set-up was applied to different groundwater samples with recoveries between 95 and 105 %.
KW - Anodic stripping volammetry
KW - Arsenic
KW - Conductive electrodes
KW - Gold-plated sensors
KW - Injection-moulding
KW - Deposits
KW - Electrodes
KW - Gold deposits
KW - Groundwater
KW - Stripping voltammetry
KW - Trace analysis
KW - Anodic stripping
KW - Disposable injections
KW - Gold-plated sensor
KW - Injection moulded
KW - Portable system
KW - Voltammetric
KW - Water samples
KW - Working electrode
KW - Injection molding
U2 - 10.1016/j.jelechem.2022.117126
DO - 10.1016/j.jelechem.2022.117126
M3 - Journal article
VL - 929
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
SN - 0022-0728
M1 - 117126
ER -